A long solenoid has 500 turns. When a current of 2 ampere is passed through it, the resulting magnetic flux linked with each turn of the solenoid is $4\times 10^{–3}$ Wb. The self-inductance of the solenoid is -

Question

( A ) 1.0 henry
( B ) 2.5 henry
( C ) 2.0 henry
( D ) 4.0 henry